Method of melting.



JN0. 871,071. PATENTBD 110V. 12, 1907.

1:. H. SCHWARTZ.

METHOD 0F MELTING.

APPLIoA'rIoN FILED 111111.. 1903.

2 SHEETS-SHBBT 1.

fill" 1 PATENTED NOV. l2, 1907.

E. H. SCHWARTZ. METHOD 0F MELTING.

APPLIOATION FILED MAB.. 9. 1903.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

EDWARD H, SCHWARTZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE HAWLEY DOWN DRAFT FURNACE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

METHOD F MELTING.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Original application filed January 16. 1903. Serial No. 139.812- Divided and this application filed March 9l 1903. Serial N o. 146 .909.

To all whom 'it may concern;

Be it known that I, EDWARD H. SCHWARTZ, residing at Chicago, Cook county, Illinois, have invented a certain new and useful Method of Melting, 'of which the following is a specification.

My invention relates to a new and useful method of melting and treating with the head of gaseous flames various substances, such as metals of different kinds and their ores, and the like, as well as numerous nonmetallic substances. In fact, my method has numerousapplicati-ons in different arts, and I contemplate practicing the same wherever applicable. I

For the purpose of affording a clear and comprehensive understanding of my new method, I have herein shownI may be practiced; Fig. 2 a cross-section thereof; and

Fig. 3 a sectional plan view on line A-B of Fig. 1.

The furnace herein illustrated is of cylindrical form in general outline, comprising a cylindrical shell I and truncated conical ends 2 and 3.. A similarly shaped furnace chaniber 4 is thereby formed, which chamber is lined with fire brick 5 or other proper refractory material. The furnace chamber has a top outlet 6 for the flames and, products of combustion and a charging opening 7 at one end and a pouring opening 8 at the other end. The furnace proper is intended to rock or oscillate in standards 9, to the end that the furnace may 'be oscillated for the effective operation of the furnace as hereinafter explained.

Through the top of the furnace, on opposite sides of the outlet 6, project burners 10, here shown as two in number, and suitably connected to a source of fuel supply. These burners are inclined toward each other in such manner as to direct, into the furnace chamber, flames which converge or meet substantially at the central point of the furnace and substantially below the outlet 6. From this arrangement of the burners and from the shape of the furnace, there result two rotary flames on either side of the central vertical axis of the furnace, all as illustrated in a general way, though ciudely, by the arrows in Figs. 1 and 2. After the separate injected flames meet, as described, the single flame thus formed as thel resultant is directed squarely toward or against the bottom'of the furnace, that is at substantially right angles thereto, and there split up lor divided into, two flames, owing to the striking of the hearth or the material thereon and also owing to the upwardly curved character of the ends of the hearth.

IThe flames then circle upwardly at opposite ends of the furnace chamber and being baffled pr deflected by the upper walls of the ends 2 and 3 of the furnace, such llames aredoubled back and forced to makecomplete circles and again strike the hearth or material thereon before obtaining exit through the outlet 6.

In practice, the material to be melted or otherwise treated is introduced into the furnace, preferably after a preliminary heating, and the burners are then started, with the result that the rotating dames hereinbefore described rapidly melt or reduce such material lying upon the bottom or hearth of the furnace. During this period the charging opening and the pouring opening are both closedby their doors, with the result that the flames and products of combustion pass out\.ard through the outlet 6. At the proper time, the furnace -is tilted and the molten material poured through the tap or pouring opening whichv'has been opened for this purpose.

In some operations, particularly that of smelting, the furnace may be tilted to such extent that the charging opening approaches the vertical and such furnace may thereupon be charged with the proper amount of ore and their fluxes. After the furnace is restored to its normal or desired working position, the ore will remain considerably banked up toward the right end of the furnace (Fig. 1) with the main body thereof above the hearth, with the resulting advantage that the ore isbetter exposed to the flame, and, as melted, will run down upon the hearth. The molten material thus flowing to the hearth in comparatively thin streams will be highly heated by the flames and rendered quite fluid. However, this particular method of melting is applicable to the melting of metals as well as to the melting and treatment of other substances. In fact, my method may be utilized for many different purposes. and for the treatment of different materials, whether metals, ores, or not, and I therefore contemplate practicing my method wherever applicable whether the operation be metallurgical or not; for instance, my method may be employed in the melting ofglass, enamel and other non-metallic materials.l

The burners 10 are supplied with fuel in any suitable way and as herein illustrated the burners are in communication with a fuel or oil supply pipe 11 and an air supply pipe 12,-the air being preferably preliminarily heated by being caused to pass througha jacket or chamber formed around'the outlet 6. The fuel and air supply pipe have a suitable swing joint connection with stationary supply pipes as described in my original application filed January 16, 1903, Serial, Number 139,312, of which application the present case is divisional.

I (lo not herein claim the apparatus or furnace in which my method is practiced, but the same forms the subject-matter of said original application.

I claim:

l. The method of melting or treating materials with heat which consists in combining a plurality of flame jets into a single ame which is projected at substantially right angles to the material and in direct contact therewith, and causing such flame to divide into two separate llames rotatively in a vertical plane in contact with the material; substantially as described. A

2. The method of melting or treating materials with heat which consists in introducing through the top of a furnace chamber a plurality of downwardly directed flame jets which meet and combine into a single flame; causing such flame to impinge directly against the material and to thereupon divide into two separate flames rotating in a vertical plane in contact with the material and thence lo pass outwardly from the furnace at a point adjacent the inlet of the dame-jets without interference therewith; substantially as described.

Il. 'lhe method of melting or treating materials with heat within a furnace chamber which consists in banking up the material at one side of the hearth proper, and introducing into such chamber a plurality of dame jets directed against the hearth and caused to rotate in a vertical plane in contact with the banked up material which will be melted and will flow in a comparatively thin stream onto thil hearth and be acted upon by the direct fiame jets; substantially as described.

4. The method of melting materials in a furnace, which method consists in combining a plurality of flames into a single dame projected substantially at right angles to the hearth of the furnace, causing such single flame to divide into twolseparate flames rotating in opposite directions,

and removing theproducts of combustion from the furnace at a point adjacent the points of entrance of the flame or fuel.

5. 'lhe method of melting materials in a furnace, which method consists in combininga plurality of fiamcs into a single ame projected substantially at right 'angles to the hearth of the furnace, causing such single flame to divide into two separate flames rotating in a vertical plane and in opposite directions, and removing the products of combustion from the furnace ata point between the points of entrance of the flame or fuel.

6. The method of melting or treating materials with heat consisting in combining a plurality of flame jets into a single flame which is directed downwardly substantially at right angles to the material, and causing such flame to divide into two separate flames whirling in a vertical plane and in a vcircle in contact with the material by impingement thereon and by movement at right angles thereto; substantially as described.

7. 'lhe method ot' melting or treating imiterials with heat consisting in combining a plurality ot' flame jets into a single flame which is directed downwardly substantially at right angles to the material, causing such dame to divide into two separate flames whirling in a vertical plane and in a circle in contact with the material. and removing the products of combustion at a point adjacent the entrance of the flume jets; substantially as described.

EDWARD ll. SCHWARTZ.

Witnesses S. E. Hmm-1N, Louis B. ERWIN. 

